| 摘要: |
| 采用秸秆与土壤混合培养的方法，研究了秸秆分解时对土壤含水量的需求以及土壤水分的动态变化。结果表明,土壤含水量主要影响秸秆前期的分解，在土壤含水量为20.0％和15.0％的条件下，秸秆分解率在第10天分别为30.73％和14.01％，在第60天分别为52.90％和43.20％。同时，秸秆在分解过程中可以释放出水分，从而提高土壤含水量，并使之在较长时问内保持稳定。加入秸秆组的土壤含水量在第50天比对照组高出5.41％，说明秸秆还田的保水、增墒作用非常显著。 |
| 关键词: 土壤含水量 秸秆分解 水分动态变化 |
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| 基金项目:陕西省自然科学基金项目(99SM25) |
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| Effect of soil moisture content on straw decomposing and its dynamic changes |
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| Abstract: |
| The effect of soil moisture on straw decomposing and its dynamic changes are studied by straw decomposing tests.The results show that soil moisture content affects mainly straw decomposing in earlier stage.When soil moisture content are 20% and 15%,straw decomposing rate are 30.73% and (14.01%) respective on tenth day;and are 52.90% and 43.20% on sixtieth day.Straw may give out water during decomposing,and increase soil moisture content.Soil moisture content of straw group is 5.41 percent higher than that of CK on fiftieth day. |
| Key words: soil moisture content straw decomposing dynamic changes of the soil moisture |
